Goodwill and Identifiable Assets (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

he changes in the carrying amount of goodwill for the year ended December 31, 2014 and the three months ended March 31, 2015 are as follows (in thousands):



	Apex			Oxford			Life Sciences Europe			Total
Balance as of December 31, 2013
Gross goodwill	$	289,712		$	220,150		$	4,564		$	514,426
Accumulated impairment	—			—			—			—
	289,712			220,150			4,564			514,426
Translation adjustment	(1,761		)	(120		)	(485		)	(2,366		)
Balance as of December 31, 2014
Gross goodwill	287,951			220,030			4,079			512,060
Accumulated impairment	—			—			—			—
	287,951			220,030			4,079			512,060
Translation adjustment	(1,412		)	(96		)	(388		)	(1,896		)
Balance as of March 31, 2015
Gross goodwill	286,539			219,934			3,691			510,164
Accumulated impairment	—			—			—			—
	$	286,539		$	219,934		$	3,691		$	510,164

Schedule of Acquired Intangible Assets

As of the dates presented, the Company had the following acquired intangible assets (in thousands):



		As of March 31, 2015						As of December 31, 2014
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Intangible assets subject to amortization:
Customer relations	3 months – 10 years	$	100,693	$	56,214	$	44,479	$	101,141	$	53,434	$	47,707
Contractor relations	2 - 7 years	39,291		32,951		6,340		39,332		32,021		7,311
Non-compete agreements	2 - 7 years	3,582		2,062		1,520		3,654		1,922		1,732
In-use software	6 years	18,900		4,154		14,746		18,900		3,366		15,534
		162,466		95,381		67,085		163,027		90,743		72,284
Intangible assets not subject to amortization:
Trademarks		178,325		—		178,325		178,325		—		178,325
Total		$	340,791	$	95,381	$	245,410	$	341,352	$	90,743	$	250,609

Schedule of Estimated Future Amortization Expense

Estimated amortization for the remainder of this fiscal year, each of the next four fiscal years and thereafter follows (in thousands):



2015	$	14,464
2016	16,276
2017	12,012
2018	9,616
2019	7,928
Thereafter	6,789
	$	67,085